Thanks everyone! I should have been more specific, as in Craft beer! I guess this is the best place for dumb questions so what does DDT stand for? I know FT and ISO.. Anything else to be aware of? Thanks

Thanks everyone! I should have been more specific, as in Craft beer! I guess this is the best place for dumb questions so what does DDT stand for? I know FT and ISO.. Anything else to be aware of? Thanks